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Connections between the shadow radius and the quasinormal modes of Kerr-Sen black hole

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arxiv 2112.11066 v1 pith:IWFS46BD submitted 2021-12-21 gr-qc

Xianglong Wu , Xiangdong Zhang This is my paper · ORCID
classification gr-qc
keywords blackholekerr-senmodesradiusshadowquasi-normalenergy
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The correspondence between the shadow radius and the quasi-normal modes of the Kerr-Sen black hole is studied. By using the equation of the shadow radius of the Kerr-Sen black hole and the angular separation constant of the quasi-normal modes, the expression of the real part of quasi-normal modes related to the shadow radius is obtained. We found that in the eikonal limit, our formula coincides with the previous result. Moreover, we also calculate the energy emission rate of the Kerr-Sen black hole, it turns out that the peak energy emissivity is inversely correlated with the charge parameter.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Chaos dynamics of charged particles near Gibbons-Maeda-Garfinkle-Horowitz-Strominger black holes

    hep-th 2025-07 reject novelty 4.0 of 10

    Charged particle orbits around GMGHS dilaton black holes transition from ordered to chaotic as the black hole charge or magnetic charge parameter increases.

  2. Scalar quasinormal modes, Lyapunov exponents and radii of null geodesics of rotating regular black holes

    gr-qc 2025-04 conditional novelty 4.0 of 10

    The paper computes scalar quasinormal modes of rotating Bardeen and Hayward black holes and finds they follow the eikonal null-geodesic relations, with Bardeen deviations up to about 19% from Kerr.

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